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    • 6. 发明授权
    • Method of respiratory gas analysis using a metabolic calorimeter
    • 使用代谢量热计进行呼吸气体分析的方法
    • US06899684B2
    • 2005-05-31
    • US10167349
    • 2002-06-10
    • James R. MaultEdwin M. Pearce, Jr.Theodore W. BarberCraig M. LawrenceTimothy J. PracharJeffrey C. WeintraubKevin S. Nason
    • James R. MaultEdwin M. Pearce, Jr.Theodore W. BarberCraig M. LawrenceTimothy J. PracharJeffrey C. WeintraubKevin S. Nason
    • A61B5/00A61B5/024A61B5/083A61B5/087A61B5/091A61B5/11A61B5/22G01N33/497A61B5/08
    • A61B5/0833A61B5/0002A61B5/02438A61B5/087A61B5/091A61B5/222G01N33/497G06F19/00
    • A method of determining a respiratory parameter for a subject using an indirect calorimeter is provided. The indirect calorimeter includes a respiratory connector for passing inhaled and exhaled gases, a flow pathway operable to receive and pass inhaled and exhaled gases having a flow tube within the flow pathway through which the inhaled and exhaled gases pass, a flow meter for determining an instantaneous flow volume of the inhaled and exhaled gases, a component gas concentration sensor for determining an instantaneous fraction of a predetermined component gas and a computation unit having a processor and a memory. The method includes the steps of initializing the indirect calorimeter and the subject breathing into the respiratory connector if the indirect calorimeter is initialized, sensing the flow volume of the inhaled and exhaled gases passing through the flow pathway using the flow meter and transmitting a signal representing the sensed flow volume to the computation unit. The method also includes the steps of sensing a concentration of a predetermined component gas as the inhaled and exhaled gases pass through the flow pathway using the component gas sensor, and transmitting a signal representing the sensed concentration of the predetermined component gas to the computation unit. The method further includes the steps of calculating at least one respiratory parameter for the subject as the subject breathes through the calorimeter using the sensed flow volume and the sensed concentration of the predetermined component gas, and providing the subject with the at least one respiratory parameter.
    • 提供了使用间接量热计确定受试者的呼吸参数的方法。 间接热量计包括用于通过吸入和呼出气体的呼吸连接器,可操作以接收和通过吸入和呼出的气体的流动路径,该吸入和呼出气体在吸入和呼出气体通过的流动通道内具有流管,流量计用于确定瞬时 吸入和呼出气体的流量,用于确定预定组分气体的瞬时分数的组分气体浓度传感器和具有处理器和存储器的计算单元。 该方法包括以下步骤:如果间接量热计被初始化,则初始化间接量热计和对象呼吸进入呼吸连接器,通过流量计检测通过流动通道的吸入和呼出气体的流量,并传送代表 感测到的流量到计算单元。 该方法还包括以下步骤:当吸入和呼出的气体使用组分气体传感器通过流动通道时,检测预定组分气体的浓度,并将表示所检测的预定组分气体浓度的信号传输到计算单元。 该方法还包括以下步骤:当受检者通过使用感测的流量和感测到的预定分量气体的浓度通过量热计呼吸时,计算对象的至少一个呼吸参数,以及向对象提供至少一个呼吸参数。
    • 9. 发明授权
    • Metabolic calorimeter employing respiratory gas analysis
    • 代谢量热仪采用呼吸气体分析
    • US06955650B2
    • 2005-10-18
    • US10161244
    • 2002-05-31
    • James R. MaultEdwin M. Pearce, Jr.Theodore W. BarberCraig M. LawrenceTimothy J. PracharJeffrey C. WeintraubKevin S. Nason
    • James R. MaultEdwin M. Pearce, Jr.Theodore W. BarberCraig M. LawrenceTimothy J. PracharJeffrey C. WeintraubKevin S. Nason
    • A61B5/00A61B5/024A61B5/083A61B5/087A61B5/091A61B5/11A61B5/22G01N33/497A61B5/08
    • G01N33/497A61B5/0002A61B5/02438A61B5/0833A61B5/087A61B5/091A61B5/222
    • An indirect calorimeter for measuring the metabolic rate of a subject includes a respiratory connector configured to be supported in contact with the subject so as to pass inhaled and exhaled gases as the subject breathes, a flow pathway, and a hygiene barrier positioned to block a predetermined pathogen from the exhaled gases. The indirect calorimeter also includes a flow pathway having a first end in fluid communication with the respiratory connector and a second end in fluid communication with a source and sink for respiratory gases. The flow pathway includes a flow tube through which the inhaled and exhaled gases pass, an outer housing surrounding the flow tube, and a chamber disposed between the flow tube and the first end. The indirect calorimeter also includes a flow meter configured to generate electrical signals as a function of the instantaneous flow volume of inhaled and exhaled gases passing through the flow pathway, and a component gas concentration sensor operable to generate electrical signals as a function of the instantaneous fraction of a predetermined component gas in the exhaled gases as the gases pass through the flow pathway. The indirect calorimeter further includes a computation unit operable to receive the electrical signals from the flow meter and the concentration sensor and operative to calculate at least one respiratory parameter for the subject as the subject breathes through the calorimeter.
    • 用于测量受试者的代谢率的间接量热计包括:呼吸连接器,被配置为被支撑为与受试者接触,以便在受试者呼吸时通过吸入和呼出的气体,流动路径和卫生屏障,其被定位成阻挡预定的 来自呼出气体的病原体。 间接热量计还包括具有与呼吸连接器流体连通的第一端的流动通道和与呼吸气体的源和汇流体连通的第二端。 流动通道包括流经管,吸入和呼出的气体通过该流管,围绕流管的外壳以及设置在流管与第一端之间的腔室。 间接量热计还包括流量计,其被配置为产生作为通过流动通道的吸入和呼出气体的瞬时流量的函数的电信号;以及组分气体浓度传感器,其可操作以产生作为瞬时分数的函数的电信号 当气体通过流动通道时,呼出气体中的预定组分气体。 间接量热计进一步包括计算单元,其可操作以从流量计和浓度传感器接收电信号,并可用于当被检者通过量热计呼吸时计算对象的至少一个呼吸参数。